YELLOWING and BROWN SPOTS!!! DAY 14. Coco, CFL's

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:confused::confused:I have cut n pasted these ?'s and answered them. I will post pics, too. Yellowing leaves with brown dry spots on one. HELP please! Thx:toke:

What is your experience level? first timer

What type of set-up are you running? Hand feed Coco

Your Equipment:
A) Type and wattage of lights. CFL's 2-252W 2700k, T5 2' 2 bar 6500k

B) Distance from tops? 18"

C) Reflector type? DIY

D) What are the bulb wattages, kelvin ratings, and schedule? CFL's 2-252W 2700k, T5 2' 2 bar 6500k 18/6

E) Is there a consistent fresh air supply? Yes

F) Do you have an exhaust fan and a circulation fan? 4" inline can fan and filter ??200CFM?? and 6" fan

G) Size of reservoir? Hand feed

Your nutrients and water:
H) Source of water. (tap or filtered) What's it's ph? Tap water PH adjusted to 6.0'ish. Add drops and shake. Aim for light green.

I) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. Full line of Canna Coco nutes. I have given Rhizotonic full strength until Day 8. On Day 8 they got PH'ed water flush. I have keep the coco moist with PH water up to now. I assume this is a lockout or def. I was thinking of starting .25 veg nutes. I also, have Mineral Matrix....kinda like a cal/mag plus. Just need experienced advice please.

J) What is the ec/ppm of your unadjusted tap (or filtered) water? Don't know what ec/ppm means.

K) What is the ec/ppm of your nutrient solution? ????

L) What is the temperature of your nutrient solution? (reservoir high and low temps) 72-77 degrees

M) Does your ec/ppm show a rise or fall when you do your daily PPM check? ???? this must be hydro stuff ????

N) Does the ph fluctuate? Only the diference in color shade I make. My goal is 5.8 - 6.8.

O) Do you foliar feed? If so, with what, how often, and at what time do you
spray? (Just after lights come on, just before they go out...) Every night time. PH'ed water. Misted on to simulate rain and give humidity.

P) How often do you replace reservoir water/nutes? 2gal nute spray jug changed every 5-7 days. Ph water mist bottle changed every 2 days.

Your growroom:

Q) What size of closet, room or hut? 3'x3'x6'

R) What are the temps and humidity levels while lights are on? ...With lights off? Lights on: T-72-82 RH-38%-48% Lights off: T-62-66 RH-60%-80%

S) Have you seen signs of insects in the growroom? No

T) Are the roots long and white, or brown and slimy? Had to dig but, they are white.

Your strain:

U) What strain are you growing? (Indica dominate or Sativa dom?) Northern Lights

V) Is this an photoperiod strain? Autofem

W) From seeds or clones? Seeds from OO Seeds
 

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I don't know much about coco but I'd guess it's hungry. Probably need to feed the roots not foliar right now. (also it's good being thorough on the questions but don't dig up the roots that question was for hydro guys)
 
When seedlings pop and rapidly yellow then it is usually over watering. I would give it a weak foliar feed and let it dry out.
 
I think its really hard to overwater in coco plus foliar feeding water is not feeding. I think it needs some nutes, but that is just my 2 cents. Good luck Maybe someone with coco experience will pop in
 
Happily, I have also been told that you can not over water coco. I am confused. I thought that nutes were not important to autos....help but, not needed. I have a 4000W 16 plant photo room and it is rockin'!!! Should I give .25 nutes this soon after a flush???...the fact that its coco it should not drown, I think. So, the brown spots are still there and more. The other 3 are still yellowing but, look good. Here's a pic of the spots.
 

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Nutes are necessary, especially in coco. Yeah give it some 1/4 strength and stop the foliar the light could magnify a water drop and burn the plants. On auto's start at 1/4 strength and work up to maybe full strength by the end. It's fine to feed this soon after the flush in coco.(I'm not a coco guy. these are just some basic's) good luck man
 
Did u rinse your coco before planting in it ? I find that causes problems sometimes. Coco can be too salty straight out the bag sometimes.
 
Yes. I think I did a bad ph flush. I was tired and lazy. Gave them Mineral Matrix last night. In 3 days I will know if it is working.
 
mine did the same and it was the water i was useing ... i started usein ph water now my plants are nice big and green :)
 
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